diff --git a/.tool-versions b/.tool-versions
index 9e83a384..a72ead61 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1 +1 @@
-ruby 2.7.3
+ruby 3.4.3
diff --git a/annotate.gemspec b/annotate.gemspec
index 43b2ac99..9f262572 100644
--- a/annotate.gemspec
+++ b/annotate.gemspec
@@ -23,7 +23,7 @@ Gem::Specification.new do |s|
 
   s.specification_version = 4 if s.respond_to? :specification_version
   s.add_runtime_dependency(%q<rake>, '>= 10.4', '< 14.0')
-  s.add_runtime_dependency(%q<activerecord>, ['>= 3.2', '< 8.0'])
+  s.add_runtime_dependency(%q<activerecord>, ['>= 3.2', '< 9.0'])
 
   s.metadata = {
     "bug_tracker_uri" => "https://github.com/ctran/annotate_models/issues/",